Datasheet
8.4. 44-pin QFN
TITLE DRAWING NO.
REV.
Package Drawing Contact:
packagedrawings@atmel.com
44MC A
9/13/07
D2
E2
L
L
B15
A18
B11
A13
B10
A12
B6
A7
A6
B5
B1
B20
A1
A24
eT
L
b
R0.20
0.40
eR
A19
B16
eT/2
SIDE VIEW
A1
A
y
C
D
E
Pin 1 ID
TOP VIEW
BOTTOM VIEW
Note:
1. The terminal #1 ID is a Laser-marked Feature.
COMMON DIMENSIONS
(Unit of Measure = mm)
SYMBOL
MIN
NOM
MAX
NOTE
A 0.80 0.90 1.00
A1 0.00 0.02 0.05
b 0.18 0.23 0.30
C 0.20 REF
D 4.90 5.00 5.10
D2 2.55 2.60 2.65
E 4.90 5.00 5.10
E2 2.55 2.60 2.65
eT – 0.70 –
eR – 0.40 –
K 0.45 – –
L 0.30 0.35 0.40
y 0.00 – 0.075
44MC, 44QFN (2-Row Staggered), 5 x 5 x 1.00mm Body,
2.60 x 2.60mm Exposed Pad, Quad Flat No Lead Package
Atmel ATmega164A [DATASHEET]
Atmel-42712C-ATmega164A_Datasheet_Summary-10/2016
20